kind

Wat het doet

Zo schrijf je het

kind create cluster [--name NAME] [--config FILE] [--image kindest/node:vX]
kind delete cluster [--name NAME]

Belangrijkste delen

Commands

create cluster

Make a cluster.

delete cluster / delete clusters --all

Remove clusters.

get clusters / get nodes

List clusters / nodes.

get kubeconfig

Print the kubeconfig.

load docker-image IMG

Copy a local image into the nodes.

load image-archive FILE.tar

Copy an image archive into the nodes.

export logs DIR

Save all node logs (for CI failures).

Meest gebruikt

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$ als gewone gebruiker# als root (of met sudo)

1. 1Make a cluster and use it

   $kind create cluster --name lab
   $kubectl cluster-info --context kind-lab
   $kubectl get nodes

2. 2A 1 + 2 node cluster with a port for ingress

   $cat kind-3.yaml
   kind: Cluster
   apiVersion: kind.x-k8s.io/v1alpha4
   nodes:
     - role: control-plane
       extraPortMappings:
         - { containerPort: 80, hostPort: 8080 }
     - role: worker
     - role: worker
   $kind create cluster --name lab3 --config kind-3.yaml --image kindest/node:v1.31.2

3. 3Test your own image without a registry

   $docker build -t shop:dev .
   $kind load docker-image shop:dev --name lab
   $kubectl create deployment shop --image=shop:dev

   Use imagePullPolicy: IfNotPresent (or a tag other than latest).

4. 4Use kind in GitHub Actions

   $cat .github/workflows/k8s-test.yml
   jobs:
     test:
       runs-on: ubuntu-latest
       steps:
         - uses: actions/checkout@v4
         - uses: helm/kind-action@v1
         - run: kubectl apply -k deploy/overlays/dev && kubectl rollout status deploy/shop

5. 5Save logs when a test fails

   $kind export logs ./kind-logs --name lab

6. 6Use podman

   $KIND_EXPERIMENTAL_PROVIDER=podman kind create cluster

7. 7List and delete

   $kind get clusters
   $kind delete cluster --name lab

8. 8Run several clusters side by side

   $kind create cluster --name blue && kind create cluster --name green
   $kubectl config get-contexts | grep kind-

9. 9Print the kubeconfig of a cluster

   $kind get kubeconfig --name lab > lab.kubeconfig
   $KUBECONFIG=lab.kubeconfig kubectl get nodes

10. 10Install an ingress controller in kind

    $kubectl apply -f https://kind.sigs.k8s.io/examples/ingress/deploy-ingress-nginx.yaml
    $kubectl wait -n ingress-nginx --for=condition=ready pod -l app.kubernetes.io/component=controller --timeout=120s

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Bestanden

~/.kube/config

kind adds a context kind-NAME.

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